Can someone name this walker texas ranger episode for me?

it was this walker texas rangers show, where in the scene they showed up to do a major bust on criminals at some warehouse, and it was this female cop that was doing some good karate. she was a regular cop and not a ranger and walker was impressed by her skills and recruited her as a candidate to be a ranger. she also had an abusive ex-husband named rusty and he kept coming after her and that one last time he came after her, she had to kill him to protect herself and her daughter. I just don't know the name of that particular show and i need help figuring it out. someone help!!